Process for preparing chlororhodiumic acid

Details Process for preparing chlororhodiumic acid Process for preparing chlororhodiumic acid

1988-09-08

1989-08-22

Heller, Gregory A.

Chemistry of inorganic compounds

Halogen or compound thereof

423472, 423491, C01B 700, C01B 1100, C01B 900

Patent

active

048594458

ABSTRACT:
Enclosed herein is a process for preparing chlororhodiumic acid which comprises dissolving rhodium or a rhodium containing mixture in hydrochloric acid by bubbling chlorine gas therein under heating and suspending the rhodium to provide the chlororhodiumic acid in the hydrochloric acid solution.
According to the present invention, the dissolving reaction proceeds sufficiently at a high speed under the relatively moderate conditions and in a more simplified process than that of a prior art, to provide the chlororhodiumic acid in high yield. The chlorine gas can be removed from the hydrochloric acid solution easily, and if the chlorine gas is contaminated in the solution as a chlorine ion, the chlorine ion is already present in the hydrochloric acid solution so that the contaminated ion will never be recognized as impurities. Therefore, the high purity chlororhodiumic acid can be obtained.

REFERENCES:
Griffith, The Chemistry of the Rarer Platinum Metals, pp. 320-323 (1967).

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